18831523967 has 2 divisors, whose sum is σ = 18831523968. Its totient is φ = 18831523966.

The previous prime is 18831523937. The next prime is 18831523987. The reversal of 18831523967 is 76932513881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18831523967 - 2¹⁰ = 18831522943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18831523937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9415761983 + 9415761984.

It is an arithmetic number, because the mean of its divisors is an integer number (9415761984).

Almost surely, 2^18831523967 is an apocalyptic number.

18831523967 is a deficient number, since it is larger than the sum of its proper divisors (1).

18831523967 is an equidigital number, since it uses as much as digits as its factorization.

18831523967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 53.

The spelling of 18831523967 in words is "eighteen billion, eight hundred thirty-one million, five hundred twenty-three thousand, nine hundred sixty-seven".